赫歇尔-ATLAS巡天：SDP场中的耀变体
宇宙学与河外天体物理
2015-03-17 v1
摘要
为了研究约束较差的亚毫米计数和耀变体的光谱性质，我们在赫歇尔-ATLAS (H-ATLAS) 科学演示阶段 (SDP) 巡天星表中搜索了这些天体。我们将亮于50 mJy的500微米源与FIRST射电星表进行了交叉匹配。我们发现了两个耀变体，两者均为先前已知。我们的研究是亚毫米波段首批盲寻耀变体的工作之一，即在该光谱区间内，关于耀变体SED仍知之甚少，但预期最亮耀变体的同步辐射峰值会出现在此。我们的初步结果与基于低频计数的合理外推一致，并对存在显著光谱向下弯曲以及毫米波段光谱上翘的迹象提出了质疑。这两个耀变体中的一个被识别为Fermi/LAT γ射线源和WMAP源。简要讨论了这两个耀变体的物理参数。这些观测表明，H-ATLAS巡天将提供关于耀变体物理及其对亚毫米计数贡献的关键信息。
引用
@article{arxiv.1005.2407,
title = {Herschel-ATLAS: blazars in the SDP field},
author = {J. González-Nuevo and G. De Zotti and P. Andreani and E. J. Barton and F. Bertoldi and M. Birkinshaw and L. Bonavera and S. Buttiglione and J. Cooke and A. Cooray and G. Danese and L. Dunne and S. Eales and L. Fan and M. J. Jarvis and H-R. Klöckner and E. Hatziminaoglou and D. Herranz and D. H. Hughes and A. Lapi and A. Lawrence and L. Leeuw and M. López-Caniego and M. Massardi and T. Mauch and M. J. Michalowski and M. Negrello and S. Rawlings and G. Rodighiero and S. Samui and S. Serjeant and J. D. Vieira and G. White and A. Amblard and R. Auld and M. Baes and D. G. Bonfield and D. Burgarella and A. Cava and D. L. Clements and A. Dariush and S. Dye and D. Frayer and J. Fritz and E. Ibar and R. J. Ivison and G. Lagache and S. Maddox and E. Pascale and M. Pohlen and E. Rigby and B. Sibthorpe and D. J. B. Smith and P. Temi and M. Thompson and I. Valtchanov and A. Verma},
journal= {arXiv preprint arXiv:1005.2407},
year = {2015}
}
备注
5 pages, 2 figures, accepted for publication in A&A (Herschel special issue)